linux-kernel - [PATCH 5.16 0357/1039] regulator: qcom-labibb: OCP interrupts are not a failure while disabled

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Date:   Mon, 24 Jan 2022 19:35:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0357/1039] regulator: qcom-labibb: OCP interrupts are not a failure while disabled

From: Marijn Suijten <marijn.suijten@...ainline.org>

[ Upstream commit d27bb69dc83f00f86a830298c967052cded6e784 ]

Receiving the Over-Current Protection interrupt while the regulator is
disabled does not count as unhandled/failure (IRQ_NONE, or 0 as it were)
but a "fake event", usually due to inrush as the is regulator about to
be enabled.

Fixes: 390af53e0411 ("regulator: qcom-labibb: Implement short-circuit and over-current IRQs")
Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
Link: https://lore.kernel.org/r/20211224113450.107958-1-marijn.suijten@somainline.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/regulator/qcom-labibb-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/qcom-labibb-regulator.c b/drivers/regulator/qcom-labibb-regulator.c
index b3da0dc58782f..639b71eb41ffe 100644
--- a/drivers/regulator/qcom-labibb-regulator.c
+++ b/drivers/regulator/qcom-labibb-regulator.c
@@ -260,7 +260,7 @@ static irqreturn_t qcom_labibb_ocp_isr(int irq, void *chip)
 
 	/* If the regulator is not enabled, this is a fake event */
 	if (!ops->is_enabled(vreg->rdev))
-		return 0;
+		return IRQ_HANDLED;
 
 	/* If we tried to recover for too many times it's not getting better */
 	if (vreg->ocp_irq_count > LABIBB_MAX_OCP_COUNT)
-- 
2.34.1